MyHomework: http://itunes.apple.com/us/app/myhomework/id303490844?mt=8 This tool was not designed necessarily for students with learning disabilities but can be very effective with upper elementary and high school students who need to keep better track of their homework
Read2Me App: http://itunes.apple.com/us/app/read-2-me/id313752154?mt=8 Allows you to import your own text file (even from the web) into the iPod or iPad, and will read the text aloud. This is helpful for students who might be weaker readers but are able to understand the meaning of the text through listening.
Livelink: http://www.liveink.com Instantly converts text into a cascading format so that the meaning of complicated passages can be easilty understood.
National Library of Virtual Manipulatives: http://nlvm.usu.edu/ A library of visual representations of math concepts and processes for all grade levels P - 12.
Basic Reading/Reading Comprehension:
Math Computation/Math Reasoning
Written Expression